Link Types Of Ethernet Ports; Adding An Ethernet Port To Specified Vlans; Configuring The Default Vlan Id For A Port - H3C S7500 Series Operation Manual

Operation Manual – VLAN
H3C S7500 Series Ethernet Switches

1.2.1 Link Types of Ethernet Ports

An Ethernet port on an S7500 switch can operate in one of the three link types:
Access: An Access port can belong to only one VLAN, and is generally used to
connect user PCs.
Trunk: A Trunk port can belong to more than one VLAN. It can receive/send
packets from/to multiple VLANs, and is generally used to connect another switch.
Hybrid: A Hybrid port can belong to more than one VLAN. It can receive/send
packets from/to multiple VLANs, and can be used to connect either a switch or
user PCs.
Note:
A Hybrid port allows the packets of multiple VLANs to be sent without tags, but a Trunk
port only allows the packets of the default VLAN to be sent without tags.
You can configure all the three types of ports on the same device. However, note that
you cannot directly switch a port between Trunk and Hybrid and you must set the port
as Access before the switching. For example, to change a Trunk port to Hybrid, you
must first set it as Access and then Hybrid.

1.2.2 Adding an Ethernet Port to Specified VLANs

You can add the specified Ethernet port to a specified VLAN. After that, the Ethernet
port can forward the packets of the specified VLAN, so that the VLAN on this switch can
intercommunicate with the same VLAN on the peer switch.
An Access port can only be added to one VLAN, while Hybrid and Trunk ports can be
added to multiple VLANs.
Note:
The Access ports or Hybrid ports must be added to an existing VLAN.

1.2.3 Configuring the Default VLAN ID for a Port

An Access port can belong to only one VLAN. Therefore, the VLAN an Access port
belongs to is also the default VLAN of the Access port. A Hybrid/Trunk port can belong
to several VLANs, and so a default VLAN ID for the port is required.
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Chapter 1 VLAN Overview